US20180202399A1 - Multiple orifice aspirator having customer-adjustable flow volume for use with a vacuum system - Google Patents
Multiple orifice aspirator having customer-adjustable flow volume for use with a vacuum system Download PDFInfo
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- US20180202399A1 US20180202399A1 US15/408,811 US201715408811A US2018202399A1 US 20180202399 A1 US20180202399 A1 US 20180202399A1 US 201715408811 A US201715408811 A US 201715408811A US 2018202399 A1 US2018202399 A1 US 2018202399A1
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- United States
- Prior art keywords
- aspirator
- vacuum
- passageway
- aperture
- variable flow
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
- F02M35/10229—Fluid connections to the air intake system; their arrangement of pipes, valves or the like the intake system acting as a vacuum or overpressure source for auxiliary devices, e.g. brake systems; Vacuum chambers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/46—Vacuum systems
- B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
- B60T13/57—Vacuum systems indirect, i.e. vacuum booster units characterised by constructional features of control valves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/02—Arrangements of pumps or compressors, or control devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/04—Arrangements of piping, valves in the piping, e.g. cut-off valves, couplings or air hoses
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
- F02B67/08—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of non-mechanically driven auxiliary apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/14—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by one actuating member, e.g. a handle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/46—Vacuum systems
- B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
- F02D2009/0201—Arrangements; Control features; Details thereof
- F02D2009/024—Increasing intake vacuum
Definitions
- the disclosed inventive concept relates generally to vacuum systems for use with automotive vehicles. More particularly, the disclosed inventive concept relates to an aspirator having multiple orifices for use in a vacuum system for a vehicle. The flow rate of gas through the aspirator may be adjusted by the vehicle operator when the vehicle is selectively moved between locations having different altitudes.
- the modern automotive vehicle typically includes various vacuum-dependent components that rely on a vacuum system for actuation.
- the vehicle's brake booster is perhaps the most important of these components.
- the vacuum needed for such systems may be generated by a pump dedicated to this purpose.
- a pump may be driven by an electric motor or may be driven by the engine itself.
- active systems reduce operating efficiency of the vehicle by drawing vehicle power either indirectly as in the case of the electric motor or directly as in the case of the engine-driven pump.
- vacuum arrangements involving the use of at least one aspirator are used in conjunction with intake airflow to create the necessary vacuum.
- the aspirator sometimes referred to as a venturi, is a passive flow mechanism that is able to provide the necessary system vacuum when the internal combustion engine is operating. Because the aspirator utilizes existing systems that themselves create a vacuum under normal operating conditions, no modification of the engine is required.
- the vacuum generated by the aspirator can be controlled as desired to meet the specific operating requirements of associated components such as the brake booster.
- the brake booster is fitted to most newer vehicles and operates to apply supplemental braking force in the brake system.
- the conventional brake booster is typically connected to the master cylinder and is mounted on the engine side of the firewall.
- the passageway of the conventional aspirator is of a fixed diameter, the vacuum system cannot be adjusted to compensate for such changes in ambient air pressure at different altitudes. This fixed diameter results in compromised vacuum system performance when the vehicle is moved between locations at different altitudes.
- the disclosed inventive concept provides a manually adjustable aspirator for use in a vacuum system for a vehicle having a vacuum source, such as the intake manifold of an internal combustion engine.
- the aspirator includes a passageway having a diameter that can be adjusted by a vehicle operator.
- a manually adjustable flow adjuster is provided to regulate the vacuum. Selective positioning of the flow adjuster allows operator selection between a relatively high boost in a relatively high altitude location having a relatively low source vacuum and a relatively low boost in a relatively low altitude location having a higher source vacuum.
- the operator-adjustable variable flow aspirator of the disclosed inventive concept includes a body, a first passageway having a narrowed aperture defined by opposed cones, a second passageway, and a manually adjustable flow adjuster operatively associated with the aperture.
- a brake booster is connected to the aspirator by a vacuum line.
- An air intake connected with a vacuum source and the aspirator by vacuum lines.
- the opposed cones include a first cone having a narrowed end and a second cone having a narrowed end. The narrowed ends are joined at a narrow aperture that defines an inner diameter.
- the manually adjustable flow adjuster includes a rotatably adjustable, finger-manipulable control knob and a threaded stem extending from the control knob.
- the stem is an aperture blocking portion that is reversibly movable between positions of increased and decreased aperture blocking of the narrowed inner diameter of the first passageway.
- the manually adjustable aspirator is the part of vacuum boost system of a vehicle used to enhance braking, fuel and other systems by boosting vacuum pressure within the system. In high altitude situations, source vacuum is low.
- the aspirator can be used to provide different gains.
- the knob is used to manually control the size of the opening of the aspirator. A user can turn the knob to change the boost.
- the knob is used to change boost according to the altitude on which the vehicle is used since pressure decreases as altitude increases. For example, as the knob is turned in, the cross section of the passageway of the aspirator is reduced, thereby producing a gain and boost change.
- the flow rate of the aspirator may be adjusted by the customer when the vehicle is moved between locations having different altitudes.
- the dealer or the customer can turn the knob to achieve 0.08 inch diameter of orifice. If the customer moves to a different altitude, the knob can be changed over to 0.06 inch diameter of orifice.
- the source vacuum changes with the altitude. This is a highly desirable feature for the operator driving, for example, from the plains to the mountains.
- FIG. 1 is a side view of the multiple orifice aspirator according to the disclosed inventive concept
- FIG. 2 is a top view of the multiple orifice aspirator according to the disclosed inventive concept
- FIG. 3 is a sectional view of the multiple orifice aspirator according to the disclosed inventive concept.
- FIG. 4 is a diagrammatic representation of the multiple orifice aspirator in a vehicle system.
- the disclosed inventive concept is illustrated in the accompanying figures in which a suggested embodiment of the manually adjustable aspirator for use in a vacuum system for a vehicle having a vacuum source is shown.
- the aspirator and its accompanying system as described and illustrated in the accompanying figures are suggestive and are not intended as being limiting.
- the manually adjustable flow adjuster arrangement is illustrated herein as being associated with an aspirator having two airflow passageways, it is conceivable that the flow adjuster may also have application with an alternative system such as one having a single airflow passageway or one having more than two passageways. Accordingly, the system of the disclosed inventive concept may be adapted for use in any circumstance where regulation of the vacuum is desired by operator manipulation.
- the manually adjustable aspirator 10 may have use in any of several vacuum arrangements in an automotive vehicle including, without limitation, brakes, air conditioners and automatic transmissions.
- the manually adjustable aspirator 10 includes an aspirator body 12 that may be a single-piece molded component or may be a multi-piece component.
- the aspirator body 12 includes a first half 14 and a second half 16 .
- the aspirator body 12 may be formed from any of several materials including, without limitation, any of several plastics or a metal.
- the first half 14 of the aspirator body 12 includes two opposed sides defining two ports, the ports including a venturi air intake port 18 and a vacuum source port 20 .
- the second half 16 includes two sides defining two ports, the ports including a brake booster port 22 and an auxiliary port 24 that may capped or connected to another vacuum-reliant component.
- Formed generally between the first half 14 and the second half 16 is a diaphragm housing 26 .
- a manually adjustable flow adjuster 28 is adjustably provided in association with the first half 14 of the aspirator body 12 .
- the manually adjustable flow adjuster 28 includes an operator manipulable control knob that may include a direction arrow formed on its face.
- FIG. 3 illustrates a sectional view of the manually adjustable aspirator 10 .
- the flow control arrangement of the disclosed inventive concept may be adapted for use in any of several vacuum flow regulating systems. Accordingly, the arrangement illustrated in FIG. 3 and discussed in conjunction therewith is only suggestive and is not intended as being limiting.
- the manually adjustable aspirator 10 as illustrated in FIG. 3 includes a first passageway 30 formed in the first half 14 of the aspirator body 12 between the venturi air intake port 18 and the vacuum source port 20 .
- the first passageway 30 includes a venturi portion 32 defined by a first conical venturi passageway 34 and a second conical venturi passageway 36 .
- the first conical venturi passageway 34 includes a wide end associated with the venturi air intake port 18 .
- the second conical venturi passageway 36 includes a wide end that is continuous with an extended passageway 38 that is associated with the vacuum source port 20 .
- the extended passageway 38 has an interior diameter that is constant.
- the manually adjustable aspirator 10 as illustrated in FIG. 3 further includes a second passageway 40 formed in the second half 16 of the aspirator body 12 between the brake booster port 22 and the auxiliary port 24 .
- the second passageway has an interior diameter that is constant.
- Regulated transverse passageways are provided between the first passageway 30 and the second passageway 40 to regulate the vacuum between the two passageways 30 and 40 .
- the regulated transverse passageways include a first transverse passageway 42 that includes a first diaphragm housing 44 having therein a movably adjustable first diaphragm 46 .
- the regulated transverse passageways further include a second transverse passageway 48 that includes a second diaphragm housing 50 having therein a movably adjustable second diaphragm 52 .
- the first movably adjustable diaphragm 46 and the second movably adjustable diaphragm 52 operate to regulate vacuum between the first passageway 30 and the second passageway 40 by selectively opening or closing the first transverse passageway 42 and the second transverse passageway 48 .
- the manually adjustable flow adjuster 28 includes a threaded portion 54 in the form of a stem that extends from the adjuster knob.
- the threaded portion 54 is a passageway blocking portion that is movable within a passageway 56 formed by the narrowest ends of the first conical venturi passageway 34 and the second conical venturi passageway 36 .
- Operator controlled movement of the manually adjustable flow adjuster 28 results in changes in the size of the passageway 56 to thereby regulate the vacuum of the manually adjustable aspirator 10 .
- the manually adjustable aspirator 10 has several applications for use in an automotive vacuum system.
- One such vacuum system is diagrammatically illustrated in FIG. 4 in which a vacuum system 60 is illustrated.
- the vacuum system 60 as shown is only suggestive as other arrangements may be possible without deviating from the spirit or scope of the disclosed inventive concept.
- the vacuum system 60 includes a vacuum source such as an intake manifold 62 .
- a vacuum source such as an intake manifold 62 .
- One end of the intake manifold is attached to an air inlet 64 or snorkel that is conventionally provided with an air filter 66 .
- An air intake pipe 67 connects the air inlet 64 to the intake manifold 62 .
- the system 60 further conventionally includes a brake booster 68 to which is attached a brake pedal assembly 70 .
- the system 60 includes an auxiliary vacuum boosted component 72 which may be any of an air conditioner, a CCD, cruise control, or any one of several auxiliary components that require a vacuum source for operation.
- a first vacuum line 74 connects the manually adjustable aspirator 10 to the intake manifold 62 and a second vacuum line 76 connects the manually adjustable aspirator 10 to the air intake pipe 67 .
- a third vacuum line 78 connects the manually adjustable aspirator 10 to the brake booster 68 and a fourth vacuum line 80 connects the manually adjustable aspirator 10 to the auxiliary vacuum-boosted component 72 (if present).
- the vehicle operator may readily open the vehicle's engine hood and adjust the manually adjustable flow adjuster 28 as required if the vehicle is moved from one elevation to another, thereby achieving different gains by selectively controlling the size of the passageway 56 .
- This adjustment is made to adjust for pressure differences at different altitudes. For example, if the operator chooses to move the vehicle to a higher elevation, the manually adjustable flow adjuster 28 is rotated in a direction toward the manually adjustable aspirator 10 resulting in the reduction of the cross section of the passageway 56 , thereby producing a vacuum gain and boost change.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Mechanical Control Devices (AREA)
Abstract
Description
- The disclosed inventive concept relates generally to vacuum systems for use with automotive vehicles. More particularly, the disclosed inventive concept relates to an aspirator having multiple orifices for use in a vacuum system for a vehicle. The flow rate of gas through the aspirator may be adjusted by the vehicle operator when the vehicle is selectively moved between locations having different altitudes.
- The modern automotive vehicle typically includes various vacuum-dependent components that rely on a vacuum system for actuation. The vehicle's brake booster is perhaps the most important of these components. The vacuum needed for such systems may be generated by a pump dedicated to this purpose. Such a pump may be driven by an electric motor or may be driven by the engine itself. However, such active systems reduce operating efficiency of the vehicle by drawing vehicle power either indirectly as in the case of the electric motor or directly as in the case of the engine-driven pump.
- Accordingly, instead of relying on an energy-taxing pump, vacuum arrangements involving the use of at least one aspirator are used in conjunction with intake airflow to create the necessary vacuum. The aspirator, sometimes referred to as a venturi, is a passive flow mechanism that is able to provide the necessary system vacuum when the internal combustion engine is operating. Because the aspirator utilizes existing systems that themselves create a vacuum under normal operating conditions, no modification of the engine is required.
- The vacuum generated by the aspirator can be controlled as desired to meet the specific operating requirements of associated components such as the brake booster. The brake booster is fitted to most newer vehicles and operates to apply supplemental braking force in the brake system. The conventional brake booster is typically connected to the master cylinder and is mounted on the engine side of the firewall.
- The use of the known aspirator in vehicle vacuum systems, while providing a relatively reliable approach to generating the appropriate vacuum for use by vacuum-consuming components, does have its limitations. One such limitation arises when the vehicle is moved from one altitude to another. Under such circumstance, the ambient air pressure is different between low and high altitudes while the parameters of operation of the aspirator remain fixed.
- Because the passageway of the conventional aspirator is of a fixed diameter, the vacuum system cannot be adjusted to compensate for such changes in ambient air pressure at different altitudes. This fixed diameter results in compromised vacuum system performance when the vehicle is moved between locations at different altitudes.
- Accordingly, as in so many areas of vehicle technology there is always room for improvements related to vacuum systems and associated components. Particularly, it would be advantageous to provide an improved aspirator that can operate efficiently and effectively and different altitudes based on operator-initiated adjustments.
- The disclosed inventive concept provides a manually adjustable aspirator for use in a vacuum system for a vehicle having a vacuum source, such as the intake manifold of an internal combustion engine. The aspirator includes a passageway having a diameter that can be adjusted by a vehicle operator. A manually adjustable flow adjuster is provided to regulate the vacuum. Selective positioning of the flow adjuster allows operator selection between a relatively high boost in a relatively high altitude location having a relatively low source vacuum and a relatively low boost in a relatively low altitude location having a higher source vacuum.
- Particularly, the operator-adjustable variable flow aspirator of the disclosed inventive concept includes a body, a first passageway having a narrowed aperture defined by opposed cones, a second passageway, and a manually adjustable flow adjuster operatively associated with the aperture. A brake booster is connected to the aspirator by a vacuum line. An air intake connected with a vacuum source and the aspirator by vacuum lines. The opposed cones include a first cone having a narrowed end and a second cone having a narrowed end. The narrowed ends are joined at a narrow aperture that defines an inner diameter.
- The manually adjustable flow adjuster includes a rotatably adjustable, finger-manipulable control knob and a threaded stem extending from the control knob. The stem is an aperture blocking portion that is reversibly movable between positions of increased and decreased aperture blocking of the narrowed inner diameter of the first passageway.
- The manually adjustable aspirator is the part of vacuum boost system of a vehicle used to enhance braking, fuel and other systems by boosting vacuum pressure within the system. In high altitude situations, source vacuum is low. The aspirator can be used to provide different gains. The knob is used to manually control the size of the opening of the aspirator. A user can turn the knob to change the boost. The knob is used to change boost according to the altitude on which the vehicle is used since pressure decreases as altitude increases. For example, as the knob is turned in, the cross section of the passageway of the aspirator is reduced, thereby producing a gain and boost change.
- Accordingly, the flow rate of the aspirator may be adjusted by the customer when the vehicle is moved between locations having different altitudes. For example, at a lower source vacuum in high altitude situation such as Denver, Colo., the dealer or the customer can turn the knob to achieve 0.08 inch diameter of orifice. If the customer moves to a different altitude, the knob can be changed over to 0.06 inch diameter of orifice. The source vacuum changes with the altitude. This is a highly desirable feature for the operator driving, for example, from the plains to the mountains.
- The above advantages and other advantages and features will be readily apparent from the following detailed description of the preferred embodiments when taken in connection with the accompanying drawings.
- For a more complete understanding of this invention, reference should now be made to the embodiments illustrated in greater detail in the accompanying drawings and described below by way of examples of the invention wherein:
-
FIG. 1 is a side view of the multiple orifice aspirator according to the disclosed inventive concept; -
FIG. 2 is a top view of the multiple orifice aspirator according to the disclosed inventive concept; -
FIG. 3 is a sectional view of the multiple orifice aspirator according to the disclosed inventive concept; and -
FIG. 4 is a diagrammatic representation of the multiple orifice aspirator in a vehicle system. - In the following figures, the same reference numerals will be used to refer to the same components. In the following description, various operating parameters and components are described for different constructed embodiments. These specific parameters and components are included as examples and are not meant to be limiting.
- The disclosed inventive concept is illustrated in the accompanying figures in which a suggested embodiment of the manually adjustable aspirator for use in a vacuum system for a vehicle having a vacuum source is shown. The aspirator and its accompanying system as described and illustrated in the accompanying figures are suggestive and are not intended as being limiting. For example, while the manually adjustable flow adjuster arrangement is illustrated herein as being associated with an aspirator having two airflow passageways, it is conceivable that the flow adjuster may also have application with an alternative system such as one having a single airflow passageway or one having more than two passageways. Accordingly, the system of the disclosed inventive concept may be adapted for use in any circumstance where regulation of the vacuum is desired by operator manipulation.
- Referring to
FIGS. 1 through 3 , a manuallyadjustable aspirator 10 is illustrated in various views. The manuallyadjustable aspirator 10 may have use in any of several vacuum arrangements in an automotive vehicle including, without limitation, brakes, air conditioners and automatic transmissions. The manuallyadjustable aspirator 10 includes anaspirator body 12 that may be a single-piece molded component or may be a multi-piece component. For example, and referring toFIGS. 1 and 3 , theaspirator body 12 includes afirst half 14 and asecond half 16. Theaspirator body 12 may be formed from any of several materials including, without limitation, any of several plastics or a metal. - Referring again to
FIGS. 1 through 3 , thefirst half 14 of theaspirator body 12 includes two opposed sides defining two ports, the ports including a venturiair intake port 18 and avacuum source port 20. Thesecond half 16 includes two sides defining two ports, the ports including abrake booster port 22 and anauxiliary port 24 that may capped or connected to another vacuum-reliant component. Formed generally between thefirst half 14 and thesecond half 16 is adiaphragm housing 26. A manuallyadjustable flow adjuster 28 is adjustably provided in association with thefirst half 14 of theaspirator body 12. The manuallyadjustable flow adjuster 28 includes an operator manipulable control knob that may include a direction arrow formed on its face. -
FIG. 3 illustrates a sectional view of the manuallyadjustable aspirator 10. As previously noted, the flow control arrangement of the disclosed inventive concept may be adapted for use in any of several vacuum flow regulating systems. Accordingly, the arrangement illustrated inFIG. 3 and discussed in conjunction therewith is only suggestive and is not intended as being limiting. - The manually
adjustable aspirator 10 as illustrated inFIG. 3 includes afirst passageway 30 formed in thefirst half 14 of theaspirator body 12 between the venturiair intake port 18 and thevacuum source port 20. Thefirst passageway 30 includes aventuri portion 32 defined by a firstconical venturi passageway 34 and a secondconical venturi passageway 36. The firstconical venturi passageway 34 includes a wide end associated with the venturiair intake port 18. The secondconical venturi passageway 36 includes a wide end that is continuous with anextended passageway 38 that is associated with thevacuum source port 20. Unlike the conical shapes of the firstconical venturi passageway 34 and the secondconical venturi passageway 36, theextended passageway 38 has an interior diameter that is constant. - The manually
adjustable aspirator 10 as illustrated inFIG. 3 further includes a second passageway 40 formed in thesecond half 16 of theaspirator body 12 between thebrake booster port 22 and theauxiliary port 24. The second passageway has an interior diameter that is constant. - Regulated transverse passageways are provided between the
first passageway 30 and the second passageway 40 to regulate the vacuum between the twopassageways 30 and 40. The regulated transverse passageways include a firsttransverse passageway 42 that includes afirst diaphragm housing 44 having therein a movably adjustablefirst diaphragm 46. The regulated transverse passageways further include a second transverse passageway 48 that includes a second diaphragm housing 50 having therein a movably adjustablesecond diaphragm 52. The first movablyadjustable diaphragm 46 and the second movablyadjustable diaphragm 52 operate to regulate vacuum between thefirst passageway 30 and the second passageway 40 by selectively opening or closing the firsttransverse passageway 42 and the second transverse passageway 48. - The manually
adjustable flow adjuster 28 includes a threadedportion 54 in the form of a stem that extends from the adjuster knob. The threadedportion 54 is a passageway blocking portion that is movable within apassageway 56 formed by the narrowest ends of the firstconical venturi passageway 34 and the secondconical venturi passageway 36. Operator controlled movement of the manuallyadjustable flow adjuster 28 results in changes in the size of thepassageway 56 to thereby regulate the vacuum of the manuallyadjustable aspirator 10. - The manually
adjustable aspirator 10, as previously noted, has several applications for use in an automotive vacuum system. One such vacuum system is diagrammatically illustrated inFIG. 4 in which avacuum system 60 is illustrated. Thevacuum system 60 as shown is only suggestive as other arrangements may be possible without deviating from the spirit or scope of the disclosed inventive concept. - With reference to
FIG. 4 , thevacuum system 60 includes a vacuum source such as anintake manifold 62. One end of the intake manifold is attached to anair inlet 64 or snorkel that is conventionally provided with anair filter 66. Anair intake pipe 67 connects theair inlet 64 to theintake manifold 62. - The
system 60 further conventionally includes abrake booster 68 to which is attached abrake pedal assembly 70. Thesystem 60 includes an auxiliary vacuum boostedcomponent 72 which may be any of an air conditioner, a CCD, cruise control, or any one of several auxiliary components that require a vacuum source for operation. Afirst vacuum line 74 connects the manuallyadjustable aspirator 10 to theintake manifold 62 and asecond vacuum line 76 connects the manuallyadjustable aspirator 10 to theair intake pipe 67. Athird vacuum line 78 connects the manuallyadjustable aspirator 10 to thebrake booster 68 and afourth vacuum line 80 connects the manuallyadjustable aspirator 10 to the auxiliary vacuum-boosted component 72 (if present). - In operation, the vehicle operator may readily open the vehicle's engine hood and adjust the manually
adjustable flow adjuster 28 as required if the vehicle is moved from one elevation to another, thereby achieving different gains by selectively controlling the size of thepassageway 56. This adjustment is made to adjust for pressure differences at different altitudes. For example, if the operator chooses to move the vehicle to a higher elevation, the manuallyadjustable flow adjuster 28 is rotated in a direction toward the manuallyadjustable aspirator 10 resulting in the reduction of the cross section of thepassageway 56, thereby producing a vacuum gain and boost change. - One skilled in the art will readily recognize from such discussion, and from the accompanying drawings and claims that various changes, modifications and variations can be made therein without departing from the true spirit and fair scope of the invention as defined by the following claims.
Claims (22)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/408,811 US20180202399A1 (en) | 2017-01-18 | 2017-01-18 | Multiple orifice aspirator having customer-adjustable flow volume for use with a vacuum system |
CN201820081381.4U CN207902417U (en) | 2017-01-18 | 2018-01-17 | Vacuum system and changeable flow suction unit for the vehicle with vacuum source |
DE202018100258.9U DE202018100258U1 (en) | 2017-01-18 | 2018-01-17 | Multi-port suction device with customizable flow volume for use with a vacuum system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/408,811 US20180202399A1 (en) | 2017-01-18 | 2017-01-18 | Multiple orifice aspirator having customer-adjustable flow volume for use with a vacuum system |
Publications (1)
Publication Number | Publication Date |
---|---|
US20180202399A1 true US20180202399A1 (en) | 2018-07-19 |
Family
ID=61167266
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/408,811 Abandoned US20180202399A1 (en) | 2017-01-18 | 2017-01-18 | Multiple orifice aspirator having customer-adjustable flow volume for use with a vacuum system |
Country Status (3)
Country | Link |
---|---|
US (1) | US20180202399A1 (en) |
CN (1) | CN207902417U (en) |
DE (1) | DE202018100258U1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2881800A (en) * | 1956-08-13 | 1959-04-14 | Dole Valve Co | Adjustable venturi proportioning valve |
US3742521A (en) * | 1971-04-09 | 1973-07-03 | Kohler Co | Whirlpool attachment for tubs |
US5291916A (en) * | 1992-12-28 | 1994-03-08 | Excel Industries, Inc. | Check valve |
US20150337867A1 (en) * | 2014-05-20 | 2015-11-26 | Ford Global Technologies, Llc | Brake vacuum aspirator |
-
2017
- 2017-01-18 US US15/408,811 patent/US20180202399A1/en not_active Abandoned
-
2018
- 2018-01-17 CN CN201820081381.4U patent/CN207902417U/en active Active
- 2018-01-17 DE DE202018100258.9U patent/DE202018100258U1/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2881800A (en) * | 1956-08-13 | 1959-04-14 | Dole Valve Co | Adjustable venturi proportioning valve |
US3742521A (en) * | 1971-04-09 | 1973-07-03 | Kohler Co | Whirlpool attachment for tubs |
US5291916A (en) * | 1992-12-28 | 1994-03-08 | Excel Industries, Inc. | Check valve |
US20150337867A1 (en) * | 2014-05-20 | 2015-11-26 | Ford Global Technologies, Llc | Brake vacuum aspirator |
Also Published As
Publication number | Publication date |
---|---|
DE202018100258U1 (en) | 2018-01-24 |
CN207902417U (en) | 2018-09-25 |
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